The Volctrans Machine Translation System for WMT20

Liwei Wu, Xiao Pan, Zehui Lin, Yaoming ZHU, Mingxuan Wang, Lei Li

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Fifth Conference on Machine Translation (WMT20) Workshop Paper

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Abstract: This paper describes our submission systems for VolcTrans for WMT20 shared news translation task. We participated in 8 translation directions. Our basic systems are based on Transformer <cit.>, into which we also employed new architectures (bigger or deeper Transformers, dynamic convolution). The final systems include text pre-process, subword(a.k.a. BPE<cit.>), baseline model training, iterative back-translation, model ensemble, knowledge distillation and multilingual pre-training.
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